java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 16:00:13,093 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 16:00:13,095 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 16:00:13,107 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 16:00:13,108 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 16:00:13,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 16:00:13,110 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 16:00:13,112 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 16:00:13,114 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 16:00:13,116 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 16:00:13,117 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 16:00:13,117 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 16:00:13,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 16:00:13,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 16:00:13,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 16:00:13,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 16:00:13,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 16:00:13,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 16:00:13,127 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 16:00:13,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 16:00:13,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 16:00:13,131 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 16:00:13,134 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 16:00:13,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 16:00:13,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 16:00:13,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 16:00:13,137 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 16:00:13,138 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 16:00:13,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 16:00:13,140 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 16:00:13,140 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 16:00:13,141 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-22 16:00:13,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-22 16:00:13,159 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 16:00:13,160 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 16:00:13,161 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 16:00:13,161 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 16:00:13,161 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 16:00:13,161 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 16:00:13,161 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 16:00:13,162 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 16:00:13,162 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 16:00:13,162 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 16:00:13,162 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 16:00:13,162 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 16:00:13,163 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 16:00:13,163 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 16:00:13,164 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 16:00:13,164 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 16:00:13,164 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 16:00:13,164 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 16:00:13,165 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 16:00:13,165 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 16:00:13,165 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 16:00:13,165 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 16:00:13,165 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 16:00:13,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 16:00:13,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:00:13,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 16:00:13,166 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 16:00:13,166 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 16:00:13,167 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 16:00:13,167 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 16:00:13,167 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 16:00:13,167 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 16:00:13,167 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 16:00:13,168 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 16:00:13,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 16:00:13,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 16:00:13,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 16:00:13,239 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 16:00:13,240 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 16:00:13,240 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-10-22 16:00:13,311 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc044fd32/c7b65e5275d746c1954ea9624b0ab364/FLAG542435e30 [2018-10-22 16:00:13,776 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 16:00:13,777 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-10-22 16:00:13,785 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc044fd32/c7b65e5275d746c1954ea9624b0ab364/FLAG542435e30 [2018-10-22 16:00:13,799 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc044fd32/c7b65e5275d746c1954ea9624b0ab364 [2018-10-22 16:00:13,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 16:00:13,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 16:00:13,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 16:00:13,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 16:00:13,819 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 16:00:13,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:00:13" (1/1) ... [2018-10-22 16:00:13,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c57dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:13, skipping insertion in model container [2018-10-22 16:00:13,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:00:13" (1/1) ... [2018-10-22 16:00:13,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 16:00:13,862 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 16:00:14,059 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:00:14,063 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 16:00:14,086 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:00:14,112 INFO L193 MainTranslator]: Completed translation [2018-10-22 16:00:14,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14 WrapperNode [2018-10-22 16:00:14,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 16:00:14,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 16:00:14,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 16:00:14,114 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 16:00:14,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 16:00:14,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 16:00:14,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 16:00:14,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 16:00:14,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... [2018-10-22 16:00:14,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 16:00:14,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 16:00:14,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 16:00:14,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 16:00:14,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:00:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 16:00:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 16:00:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 16:00:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 16:00:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 16:00:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 16:00:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 16:00:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 16:00:14,856 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 16:00:14,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:00:14 BoogieIcfgContainer [2018-10-22 16:00:14,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 16:00:14,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 16:00:14,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 16:00:14,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 16:00:14,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 04:00:13" (1/3) ... [2018-10-22 16:00:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed6f170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:00:14, skipping insertion in model container [2018-10-22 16:00:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:14" (2/3) ... [2018-10-22 16:00:14,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed6f170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:00:14, skipping insertion in model container [2018-10-22 16:00:14,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:00:14" (3/3) ... [2018-10-22 16:00:14,866 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-10-22 16:00:14,876 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 16:00:14,886 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 16:00:14,905 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 16:00:14,935 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 16:00:14,936 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 16:00:14,936 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 16:00:14,937 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 16:00:14,937 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 16:00:14,937 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 16:00:14,937 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 16:00:14,937 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 16:00:14,937 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 16:00:14,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-22 16:00:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 16:00:14,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:00:14,966 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:00:14,973 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:00:14,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:00:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash -900586403, now seen corresponding path program 1 times [2018-10-22 16:00:14,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:00:15,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:15,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:00:15,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:15,036 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:00:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:00:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:00:15,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:00:15,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 16:00:15,121 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:00:15,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 16:00:15,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 16:00:15,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 16:00:15,144 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-10-22 16:00:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:00:15,168 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-10-22 16:00:15,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 16:00:15,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-22 16:00:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:00:15,180 INFO L225 Difference]: With dead ends: 39 [2018-10-22 16:00:15,180 INFO L226 Difference]: Without dead ends: 17 [2018-10-22 16:00:15,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 16:00:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-22 16:00:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-22 16:00:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 16:00:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-22 16:00:15,234 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-10-22 16:00:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:00:15,235 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-22 16:00:15,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 16:00:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-22 16:00:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 16:00:15,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:00:15,239 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:00:15,240 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:00:15,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:00:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1574784468, now seen corresponding path program 1 times [2018-10-22 16:00:15,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:00:15,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:15,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:00:15,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:15,244 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:00:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:00:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:00:15,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:00:15,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 16:00:15,514 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:00:15,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 16:00:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 16:00:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 16:00:15,517 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-10-22 16:00:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:00:15,543 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-22 16:00:15,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 16:00:15,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-22 16:00:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:00:15,545 INFO L225 Difference]: With dead ends: 17 [2018-10-22 16:00:15,545 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 16:00:15,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:00:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 16:00:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 16:00:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 16:00:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 16:00:15,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-10-22 16:00:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:00:15,548 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 16:00:15,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 16:00:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 16:00:15,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 16:00:15,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 16:00:15,600 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-22 16:00:15,600 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-22 16:00:15,600 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:00:15,600 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:00:15,601 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 16:00:15,601 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 16:00:15,601 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 16:00:15,601 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2018-10-22 16:00:15,601 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2018-10-22 16:00:15,601 INFO L428 ceAbstractionStarter]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2018-10-22 16:00:15,602 INFO L428 ceAbstractionStarter]: At program point L27-4(lines 27 33) the Hoare annotation is: true [2018-10-22 16:00:15,602 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2018-10-22 16:00:15,602 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 37) the Hoare annotation is: true [2018-10-22 16:00:15,602 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-10-22 16:00:15,602 INFO L425 ceAbstractionStarter]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2018-10-22 16:00:15,603 INFO L428 ceAbstractionStarter]: At program point L18-4(lines 18 20) the Hoare annotation is: true [2018-10-22 16:00:15,603 INFO L425 ceAbstractionStarter]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2018-10-22 16:00:15,603 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-10-22 16:00:15,603 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-10-22 16:00:15,603 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-10-22 16:00:15,603 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-10-22 16:00:15,604 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-10-22 16:00:15,604 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-10-22 16:00:15,604 INFO L425 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-10-22 16:00:15,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 04:00:15 BoogieIcfgContainer [2018-10-22 16:00:15,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 16:00:15,611 INFO L168 Benchmark]: Toolchain (without parser) took 1800.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 689.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -701.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:15,614 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:15,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:15,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:15,616 INFO L168 Benchmark]: Boogie Preprocessor took 37.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:15,617 INFO L168 Benchmark]: RCFGBuilder took 661.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 689.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -742.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:15,618 INFO L168 Benchmark]: TraceAbstraction took 752.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:15,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 661.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 689.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -742.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 752.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 8 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...